May 2017
Intermediate to advanced
634 pages
16h 24m
English
In addition to the many other functions that Nmap provides, it also can be used to identify firewall filtering. The means Nmap performs this type of firewall identification largely by using the same techniques that were previously discussed in the Scapy recipe. A combination of SYN and unsolicited ACK packets are sent to the destination port, and the responses are analyzed to determine the state of filtering.
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